Characteristics of nitrogen balance model and pollution risk assessment in Yangtze River economic zone
DUAN Yang,WU Wenjun,JIANG Hongqiang,LI Bo,YANG Yong
Ecology and Environmental Sciences . 2020, (7): 1344 -1351 .  DOI: 10.16258/j.cnki.1674-5906.2020.07.008

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